In this article we present an overview of four studies investigating Greek secondary students' conceptual and procedural knowledge of fractions. We discuss the problem of defining conceptual and procedural knowledge, and the implications of adopting one particular definition over others. We draw on the studies and their results to discuss the…

Word list reading fluency is theoretically expected to depend on single word reading speed. Yet the correlation between the two diminishes with increasing fluency, while fluency remains strongly correlated to serial digit naming. We hypothesized that multi-element sequence processing is an important component of fluency. We used confirmatory…

Bullying and victimisation may result from ineffective coping with interpersonal stressors. However, little is known about the preadolescents who are most susceptible to dysfunctional coping styles. Self-efficacy beliefs may be one source of individual differences in coping among those involved in bullying and victimisation. The purpose of the…

In this article, the change in examinee effort during an assessment, which we will refer to as persistence, is modeled as an effect of item position. A multilevel extension is proposed to analyze hierarchically structured data and decompose the individual differences in persistence. Data from the 2009 Program of International Student Achievement…

The aim of this study is to examine the ability of children and adolescents with visual impairments to code and represent near space. Moreover, it examines the impact of the strategies they use and individual differences in their performance. A total of 30 individuals with visual impairments up to the age of 18 were given eight different object…

This study compared the consistency of the Short Form (SF) and the Long Form (LF) of the Bruininks-Oseretsky Test of Motor Proficiency (BOTMP) in identifying preschool children with motor impairment (MI). One hundred and forty-four Greek preschool children participated (74 males, 70 females; mean age 5y 2mo [SD 5mo], range 4y 6mo-5y 6mo). Although…

Background: There is considerable interest in differences in students' approaches to learning, particularly in the difference between "deep" approaches (characterized by contextualization, critical review and recognition of the value of the content) and "surface" approaches (characterized by rote learning for functional…